本题目来源于试卷: Physics Unit25: Optical Instruments，类别为 通用国际物理
[单选题]
If the human eyeball is too shortbaui2p1v*)da* f12,c o frwhf iwe/w; from froru :rnj 2n:2bdtv4wca (f(+gi nt to back, this gives rise to a vision defect that can be corwtfu irva db+gr:2nn(:j ( c24rected by using
A. convex meniscus eyeglasses.
B. concave meniscus eyeglasses.
C. cylindrical eyeglasses.
D. contact lenses, but no ordinary lenses.
E. shaded glasses (i.e., something that will cause the iris to dilate more).
参考答案: A
本题详细解析:
暂无
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